Accession Number : ADA296037
Title : Surface Composition of Fluorinated Poly(amide urethane) Block Copolymers by Electron Spectroscopy for Chemical Analysis.
Descriptive Note : Technical rept.,
Corporate Author : STATE UNIV OF NEW YORK AT BUFFALO DEPT OF CHEMISTRY
Personal Author(s) : Zhuang, Hangzhong ; Marra, Kacey G. ; Ho, Tai ; Chapman, Toby M. ; Gardella, Joseph A., Jr
PDF Url : ADA296037
Report Date : JUN 1995
Pagination or Media Count : 31
Abstract : The surface composition and near surface depth profiles of solution-cast films of poly(amide urethane) block copolymers were measured using angle-dependent electron spectroscopy for chemical analysis (ESCA). Segregation of fluorinated polyamide soft segment to the surface was detected and quantified. The poly(amide urethane)s were made from amine-terminated polyamides with N-alkylated fluorinated side chains as well as fluorinated backbones, methylenebis(cyclohexane diisocyanate) H12MDI, and butanediol. The resulting copolymers display extremely low surface energy. Annealing of the solution-cast films drives the fluorinated side chains to the surface. A deconvolution program was utilized to obtain composition depth profiles and to confirm phase segregation. (AN)
Descriptors : *BLOCK COPOLYMERS, *SURFACE CHEMISTRY, *URETHANES, ANNEALING, QUANTITATIVE ANALYSIS, POLYAMIDE PLASTICS, SYNTHESIS(CHEMISTRY), PHASE STUDIES, DEPTH, LOW ENERGY, SEGREGATION(METALLURGY), X RAY PHOTOELECTRON SPECTROSCOPY, FLUORINE, CONCENTRATION(COMPOSITION), MOLECULAR STRUCTURE, AMIDES, ELECTRON SPECTROSCOPY, FLUORINATION, ATOMIC SPECTRA, BUTANOLS.
Subject Categories : Polymer Chemistry
Atomic and Molecular Physics and Spectroscopy
Distribution Statement : APPROVED FOR PUBLIC RELEASE